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CLI-based Configuration Guide - IP Unicast Routing

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R009

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Configuring BGP to Advertise Default Routes to Peers

Configuring BGP to Advertise Default Routes to Peers

If a BGP device needs to send multiple routes to its peer, the BGP device can be configured to send only a default route with the local address as the next-hop address to its peer, regardless of whether there are default routes in the local routing table. This function reduces the number of network routes and saves memory and network resources.

Pre-configuration Tasks

Before configuring BGP to send default routes to peers, complete the following task:


  1. Run system-view

    The system view is displayed.

  2. Run bgp { as-number-plain | as-number-dot }

    The BGP view is displayed.

  3. Enter the corresponding address family view based on network type to configure BGP devices on networks.

    • Run ipv4-family { unicast | multicast }

      The IPv4 address family view is displayed.

    • Run ipv6-family [ unicast ]

      The IPv6 address family view is displayed.

  4. Run peer { group-name | ipv4-address | ipv6-address } default-route-advertise [ route-policy route-policy-name ] [ conditional-route-match-all { ipv4-address1 { mask1 | mask-length1 } } &<1-4> | conditional-route-match-any { ipv4-address2 { mask2 | mask-length2 } } &<1-4> ]

    A BGP device is configured to send default routes to a peer or peer group.

    The conditional-route-match-all and conditional-route-match-any keywords are not supported in the IPv4 multicast address family view and the IPv6 address family view.

Verifying the Configuration

  • Run the display bgp routing-table [ ipv4-address [ mask | mask-length [ longer-prefixes ] ] ] command to check received BGP default routes.

  • Run the display bgp multicast routing-table [ ip-address [ mask-length [ longer-prefixes ] | mask [ longer-prefixes ] ] ] command to check received MBGP default routes.
Updated: 2019-12-27

Document ID: EDOC1000174069

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